The proxy server received an invalid
response from an upstream server.
The proxy server could not handle the request GET /dataset/dataset/h10635-nos-hydrographic-survey-prince-william-sound-alaska-1995-09-26/resource/504c2d2a-0e07-43c4-aa82-4480a3b39135.
Reason: DNS lookup failure for: os-data-catalog.ngdc.noaa.gov
Additionally, a 502 Bad Gateway error was encountered while trying to use an ErrorDocument to handle the request.